42730768 has 10 divisors (see below), whose sum is σ = 82790894. Its totient is φ = 21365376.

The previous prime is 42730747. The next prime is 42730783. The reversal of 42730768 is 86703724.

It can be written as a sum of positive squares in only one way, i.e., 21827584 + 20903184 = 4672^2 + 4572^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1335321 + ... + 1335352.

Almost surely, 2^42730768 is an apocalyptic number.

It is an amenable number.

42730768 is a deficient number, since it is larger than the sum of its proper divisors (40060126).

42730768 is a wasteful number, since it uses less digits than its factorization.

42730768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2670681 (or 2670675 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 37.

The square root of 42730768 is about 6536.8775420685. The cubic root of 42730768 is about 349.6070910595.

The spelling of 42730768 in words is "forty-two million, seven hundred thirty thousand, seven hundred sixty-eight".